body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.header,
.footer {
  padding: 2rem 2rem;
  text-align: center;
  font-size: 1.5rem;
}

.header {
  position: sticky;
  top: 0;
  background-color: #ff0000;
}

.footer {
  background-color: #00ff00;
}

.content-container {
  background-color: #0000ff;
}

.content {
  margin: 0 auto;
}

@media screen and (min-width: 1040px) {
  .header,
  .footer {
    padding: 5rem 2rem;
  }
}